Plzeň, also known as Pilsen, is a city in the Czech Republic, located in the western part of the country. It is famous for its rich brewing history and is the birthplace of the world-renowned Pilsner beer. The city has a population of around 170,000 and features a mix of historical architecture and modern amenities. The city is home to several notable landmarks, including the St. Bartholomew's Cathedral and the Great Synagogue, which is one of the largest in Europe. Plzeň also hosts various cultural events and festivals, making it a vibrant destination for both locals and tourists.